<!DOCTYPE html>
<html>

	<head><link rel="shortcut icon" href="http://likexia.gitee.io/tools/lib/img/h5.png" type="image/x-icon">
		<meta charset="utf-8">
		<!--自动刷新，1s=1-->
		<!--<META http-equiv="Refresh" content="3">-->
		<!--<meta http-equiv="X-UA-Compatible" content="IE=7" />-->
		<meta http-equiv="X-UA-Compatible" cotent="IE=edge,chrome=1" />
		<!--禁止缓存-测试时用-->
		<meta http-equiv="expires" content="0">
		<meta http-equiv="pragma" content="no-cache">
		<meta http-equiv="cache-control" content="no-cache">
		<!--禁止缓存-测试时用-->
		<!--禁止禁止识别电话号码和邮件-->
		<meta name="format-detection" content="telephone=no, email=no" />
		<!--禁止禁止识别电话号码和邮件-->
		<!--x5内核浏览器包括：QQ浏览器，qq,微信内置的浏览器（ 竖屏显示、以及全屏显示）-->
		<meta name="x5-orientation" content="portrait" />
		<meta name="x5-fullscreen" content="true" />
		<!--x5内核浏览器包括：QQ浏览器，qq,微信内置的浏览器（ 竖屏显示、以及全屏显示）-->
		<!--UC浏览器竖屏显示和全屏显示-->
		<meta name="screen-orientation" content="portrait">
		<meta name="full-screen" content="yes">
		<!--UC浏览器竖屏显示和全屏显示-->
		<meta name="viewport" content="width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no" />
		<title></title>
		<style type="text/css">
.text-effect {
  overflow: hidden;
  position: relative;
  filter: contrast(110%) brightness(190%); }

.neon {
  position: relative;
  background: black;
  color: transparent; }
  .neon::before, .neon::after {
    content: attr(data-text);
    color: white;
    filter: blur(0.02em);
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none; }
  .neon::after {
    mix-blend-mode: difference; }

.gradient,
.spotlight {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  pointer-events: none;
  z-index: 10; }

.gradient {
  background: linear-gradient(45deg, red, blue);
  mix-blend-mode: multiply; }

.spotlight {
  animation: light 5s infinite linear;
  background: radial-gradient(circle, white, transparent 25%) 0 0/25% 25%, radial-gradient(circle, white, black 25%) 50% 50%/12.5% 12.5%;
  top: -100%;
  left: -100%;
  mix-blend-mode: color-dodge; }

@keyframes light {
  100% {
    transform: translate3d(50%, 50%, 0); } }
.neon {
  font: 700 220px 'Lato', sans-serif;
  text-transform: uppercase;
  text-align: center;
  margin: 0; }
  .neon:focus {
    outline: none;
    border: 1px dotted white; }

body {
  background: black;
  display: flex;
  min-height: 100vh;
  justify-content: center;
  align-content: center;
  align-items: center; }

		</style>
	</head>

	<body>
<div class="text-effect">
  <!-- Select the text in the preview and type in your own -->
  <h1 class="neon" data-text="404" contenteditable>
    404
  </h1>
  <div class="gradient">
  </div>
  <div class="spotlight">
  </div>
</div>
	</body>

</html>